I used to fish the Middle Fork quite a bit with my dad. We saw a lot of rattlers up there. One evening I stepped on one while walking back to camp. I was extremely lucky to have escaped unharmed. I now carry a Sawyer snakebite kit in my chest pack. It doesn't take up too much room, being about the size of a medium fly box. If you fish alone alot, like me, you may want to look into one.